Driving mechanism



5 Sheets-Sheet l DRIVING MECHANI SM M. E. LAYNE ET Al.

Original Filed Feb. 18, 1924 July 23, 1929.

M. E. LAYNE ET AL I July 23, 1929.

DRIVING MECHANIKSM Original Filed Feb. 1S, 1.924 3 Sheets-Sheet July 23,1929. M. E. LAYNE ET AL 1,721,701v

DRIVING MECHANISM Original Filed Feb. 18, 1924 3 Sheets-Sheet, 3

J r A m btomcq I Continuation of application Serial No.

Patented July 23, 1929.

UNITED STATES PATENT ),oFFlcE.

HAHLON E. LAYNE SAMUEL N. HALL, OF SOUTH PASADENA, CALIFORNIA, AS-

SIGNORS ".lO LAYNE & BOWLER CORPORATION, F LOS ANGELES, CALIFORNIA, A

Y CORPORATION 0F CALIFORNIA.

This invention relates to driving mechamechanism for rotary pumps of thetypeA employed in deep water or other fiuid wells. This application is acontinuation-of application Serial Number 693,551, filed February 18,1924, for driving mechanism.

One of the greatest diicu'lties with the lrotary pump mechanism of thetype employed for driving a pump supported in a -deep water or otherwell is encountered in preventing the radial-bearings of the mechanismfrom chattering in use. The chattering of such radial bearings in thecommon form of rotary pump mechanism isdue to a number of causes. Thusqfrequently to enable the common radial bearings to properly receive theload, the radial bearings of ythe rotary pump mechanism are supportedonly at one end with the result that one end of the radial bearing isless rigidly held and will rapidly wear, causing the rotary pumpmechanism to wear and then chatter during operation. One of the objectsof this invention is to provide a mechanism of the class described bywhich chattering of the bearings employed in the ,mechanism may beeliminated by distributing the radial load' from the mechanism on twobearings positioned above and below the motor or rotating part of thedevice employed for driving the mechanism and further to provide a meansfor maintaining suoli bearings under a thrust `or longitudinal load sothat in use,

the wear upon the radial bearings is automatically taken up and thus,lthrough the elimination of clearance in the bearings, the chattering isovercome.

Another object of thepresent invention is to provide such a mechanismthat the combined thrusts or load from both the rotor or rotating partof the device employed for DRIVING MECHANISM,

693,551, led February 18, 1924. This application led Hay 10, 1926.Serial No. 107,922.

both such power member and driven shaft, thus maintaining the same incorrect alignment in the mechanism and eliminating chatter in themechanism by automatically taking up such radial wear or clearance aswould otherwise be present in the radial bearings of the mechanism.

Another object of the present invent-ion is to provide a mechanism bywhich the longitudinal thrust of the driven shaft of the mechanism such,for instance, as the pump shaft may be distributed between bearingsdisposed above and below the means employed for driving such drivenshaft so that separate lubricating reservoirs may be provided for theseparate bearings and thereby the bearings employed for taking up suchthrust load can be maintained at a lower temperature than the bearingsof the common type of mechanism which are positioned vin a unit oilreservoir. vAnother object of the present invention is to provide such amechanism that the thrust load of the mechanism can be distributed inany desired ratio or proportion between a plurality of bearings, and tofurther provide such a mechanism that the thrust load of the mechanismcan be distributed as desired to bearings located at any convenient ordesirable location in the rotary pump mechanism. i

An important feature of our invention is the provision of a distributingmeans which makes it possible to distribute thrust and radial load aboveand below the rotating f part of the driving device of the mechanism,whereby it is os'sible to receive thrust and radial load of) both partsupon the 4same bearings, and this is found to resultl in a rotary pumpmechanism in which there is eliminated several sets of radial and thrustbearings, which are now necessary in such a pump structure with acorresponding decrease 1n the number of bearings and expense ofconstructing a rotary pump mechanism to operate under a given load.

Various other objects and advantages of the present invention will beunderstood from the following description of the accompanying drawings,wherein there 1s set forth a number of examples disclosing the preferredembodiments of the invention.

The invention includes various novel parts pump mechanism embodying thepresent invention, the elevation being partly in vertical longitudinalsection,

Figure 2 is a similar elevation mainly in vertical longitudinal sectionand with the pump and shaft casing broken away,

Figure 3 is a transverse section on the line 3 3 of Figure 2,

Figure 4 is an elevation partly in vertical longitudinal section of amodified form of the invention,

Figure 5 is an elevation, partly in vertical longitudinal section, of afurther embodiment of the invention, and,

Figure 6 is an elevation, partly in vertical longitudinal section, of afurther modification of certain parts of the mechanism.

Referring first-to Figures 1 to 3, inclusive, the mechanism kcomprises arotary pump 1 which is adapted to be suspended in a well casing, such as2, by means of its discharge casing v4 concentric with a driven or pumpshaft 5-of the pump which shaft 5 is enclosed within a shaft enclosingcasing 6. The pump shaft 5 is connected to one or more impellers 7,which draw water in at their lower end 8 and discharge :same from theirperiphery 9 into a water passage 10 contorted so as to successivelyreceive fluid from the discharge of one impeller and deliver the same tothe succeeding impeller. There may be one or any number of suchimpellers, all disposed within the :same pump casing and connected tothe same pump shaft 5.

The specific construction of such a pump is at present well understoodin the art. The `disch'ar,g ;e casing 4 is connected to a casing head11, supported upon `a frame 12 at the top of the well. Said head 11 isprovided with the usual lateral discharge elbow 13.

Supported upon the casing head 11 is provided a motor stand 14 uponwhich is supported an electrical motor 15 which is preferably of theinduction type. The motor 15 is provided with a rotor 16, carried by ahollow power or driving member 17, which extends a distance above andbelow the rotor 16. The' pump shaft 5 of the rotary pump 1 extendsvertically upward through the discharge easing 4 and through the casinghead 11, the upper end extending through the hollow power member 17 ofthe motor and there provided with a. .collar 18 keyed to the shaft 5,said collar 18 being also threaded or otherwise connected as indicatedat 19 to the hollow power member 17 and n thus the collar 18 acts aspart of the power member. 2O indicates a packing box forming part of thecasing head 11 which receives packing 21 packed against the pump'shaft5. The lower end of the box 20 is internally threaded, as indicated at22, and in use is connected -to the shaft enclosing casing 6 of theshaft. 23 indicates a rib providing an oil duct 24 by which lubricantmay be introduced into the shaft enclosing easing 6 so as to flow downsuch casing and lubricate such bearings for the shaft as are locatedlbelow the discharge casing 11. The upper end of the discharge casing 11forms an oil reservoir 25 surrounding the pump shaft 5 which oilreservoir encloses a thrust bearing 26 which may be-of any preferred orcustomary type. 27 indicates a sleeve surrounding the pump shaft 5`)fixed to the bottom of the reservoir 26 and extending upwardly'abovethe wearing faces of the thrust bearing 26, which thus provides meansfor retaining the oil in the reservoir 25. A

28 indicates a cylindrical extension of the casing head extendingupwardly from the reservoir 25 surrounding the pump shaft Said extension28 supports a ball radial bearing 29, engaging the power member 17 ofthe electrical motor 15. The cylindrical section 28 is covered by a cap30.

31 indicates a pawl pivoted to a stud 32 screw-threaded into theextension 28, which pawl is intended to cooperate with recesses 33 onthe upper face of a`collar 34 forming the upper thrust member of thebearing 26, so that the thrust bearing 26 is prevented by the pawls 31from rotating except 'in one direction. The thrust member 34 being fixedto the hollow power member 17 thus prevents a back rotation of the motorand pump shaft. The collar or upper driven bearing member 34 is providedwith-a recess 35 which is positioned to engage a pointed stud 36 whenthe stud is threaded toward the pawl member and elevate the pawl member31 out of engagement with the notches 33 so that when desired, such areverse rotation of the motor and pump shaft may be permitted.

The vertical thrust of the pump shaft 5 of the mechanism and impellersand part supported thereby is distributed between the collar 18 and-asleeve 37 fitted around the collar 18 by means of a thrust distributingring 38 engaging the lower face of anut 39. Said nut 39 is threaded tothe upper end of the pump shaft 5, sullicient length of threads beingprovided so that the pump shaft 5 may be vertically adjusted in themechanism to properly center the impellers 7 in the pump proper. Thedistributing ring 38 engages a downwardly and inwardly beveled face 40on the sleeve 37 and an upwardly and inwardly beveled face 41 on theVoir.

ample, as shown in Figure 2, and the beveled i face 42 of thedistributingring 38 may be disposed at a angle with the Vertical,whereas the beveled face 43 of the distributing ring 38 may be a. 60angle with the `vertical. Such a distributing ring 38 Will impartsubstantially double the load upon the collar 18 as imparted to thesleeve 37. It will be apparent how by changing these angles, the ratiomay be varied to suitthe designer of the pump mechanism.

The sleeve 37 engages a ball radial and thrust bearing 44 supportedwithin an oil cup 45 provided at the top of the motor 15, said cup beinglubricated through anoil line 46 leading through ducts 47 into thereserrllie bearing 44 and upper end of the pump shaft 5 and adjacent.parts is covered by a bonnet 48 so as to be protected from the elements.

It will be apparent that in operation, when it is desired to adjust thelongitudinal and veitical position of 'the pump shaftY 5 to properlyaline tliefimpellersv 7 within the pump 1, it is only necessary toremove the bonnet 48 from the top of the motor 15 and' raise or lowerthe pump shaft 5 by rotating the nut 39, and this is accomplishedindependently of thev vertical adjustment of the 1 hollow member 17 ofthe motor as the vertical position of `such member is not affected bysuch adjusting operation. It is also seen thatvertical thrust load fromboth the motor 15 and pump shaft 5 is imparted'to the same bearings inplace of providing sepa-rate thrust bearings for such purposes as isthepresent general practice.

It is also seen that the radial thrust of vboth the rotor 15 and pumpshaft 5 is received upon bearings disposed above and below the motorwhere the bearings are readily accessible to attention and, moreover,the provision of such bea-ring acts to steady the motor 15 and pumpshaft5 and decrease the' Wear and vibration of the parts.

casing headll, is connected with the dis' charge casing 4a. The pulleyis preferably supported upon a. stand 50 mounted upon the casing head1la of the rotary pump mechanism and enclosed in a pulley casing 51resting upon said stand 50. The undersection 52 of the stand 50 providesa closure for the top of the casing head 11 and surroundingthe-pumpfshaft 5a is a sleeve 53. Said sleeve 53 is provided with apacking gland 54 for the shaft 5a and also provides a connection for theshaft enclosing casing 6 so that oil 'fed downthe sleeve 53 may passdown the shaft enclosing casing 6.

The pump shaft 5l extends downwardly through the pulley casing 51 and isprovided near its upper end with a vcollar 18. keyed to the shaft andthreaded at its lower end to a hollow pulley member 17" upon which abelt pulley 55 is fixed. Said hollow power member 17 is provided with avcircular fiangeA 56 at its lower end, which flange rests upon the top ofa radial thrust-bearing 57 which alsa engages` the power member 17 so asto rec-eivevertical thrust from the power mem ber at a place below theflange56. Said bearing 57 is supportedradially and vertically upon aflange 58 formed within an oil basin 59 extending upward within thepulley casing 51.

The bore of the lower end .of the power member 17is increased indiameter, as indicated at 60, so that an oil retaining sleeve 61 mayextend between the member 17 and pump shaft 5, said memberbeingconnectedto the bottom ofthe pulley casing. At the upper end, the radial thrustof the power member 17| is imparted through the collar 18a to a radialthrust bearing 62.sup orted radiall and from below by an annu us 63extending upwardly' from within the bottom of an oil cupy 64, providedby a cover 65 for the pulley casing 51, said cup 64 being extendeddownwardly within the casing and behind the drum of the pulle 55. Thebearing -62 receives part of t ie vertical thrust of the pump shaft 5*iLfrom` a distributin ring 66, which is herein illustrated as-froun incross section and engaging a sleeve 67 surrounding the collar-118L andresting upon an ufpper face of the bearing 62. The ring 66 tsbetweenjthe sleeve 6 and collar 18- against beveled faces 66x onV saidmembers and being round in cross sec tion, distributes substantially anequal load from the pump shaft to the bearings 6 2 and 56. However, asin the preceding embodiment'of the invention, this load may be unequallydistributed between such bearings, if desired. It is also to be pointedout that it is not essential that the distributor 66 should be of ringshape as it may bev formed in various. other manners, i. e., mightcoinpris'e a number Yof balls arranged in series. 'The thrust from thepump shaftA 5 is imparted to the distributing member 66 by a nut 68threaded -to the upper end of said pump shaft 5, there being sufficientthreads upon the shaft 5f" to permitvarious Vertical adjustments of theshaft. The oil cup 64 and upper end of`pump shaft 51 is covered by acover 69, as shown.

It is seen as before, that many of the advantages of the previousconstruction are provided by the modification shown in Figure 4,employing the pulley drive in place of an electrical motor.

Referring now to the embodiment of the invention shown in Figure 5,amechanism is there shown including a frame 70 upon which the mechanismis supported, said mechanism including a discharge casing 71 connectedwith a casing head 72 having the usual lateral discharge elbow 73.Mounted upon the casing head 72 is a stand 74 which,

in this embodiment of the invention, is shown integral with a pulleycasing 75. rlhe motor stand 74 is integral with a sleeve 76, extendingdownwardly within the casing head 72 and'there threaded to a casing 77which is employed for enclosing a vertical pump shaft 78 and provides alubricant chamber or conduit for lubricating certain parts of themechanism disposed below the casing head 72. The sleeve 76 receives astufiing box 79 at its upper end which packs the shaft 78 to the sleeve76. The pump shaft 78 extends upwardly through the pul ley casing and isthreaded at its upper end 8O to an adjusting member or nut 81 which isemployed as a means for longitudinally adjusting the position of thepump shaft/78, so that the impellers carried by the shaft may beproperly centered within the pump bowl or casing. It is understood,

of course, that the mechanism shown in Figure 5 1n use, is connectedwith such a pump as is indicated in Figure 1.

The adjusting nut 81 of the mechanism supports the load of the pumpshaft 79 upon a hollow power member 82, which member is driven by apulley 83 disposed in the pulley casing 75. It is understood, however,that in place of the power member 82,

mounting a pulley 83, this embodiment of` the invention might alsoemploy an electric motor, such as shown in Figures l and 2, or otherdriving means.

The hollow power member 82 is provided with a collar 83 or flangeintegral with the member, which collar or flange 83 has a horizontalface 84 engaging a rotating bearing member 85 of a ball type radial andthrust bearing, also provided with a vertical face 86 engaging therotatable bearing member 85. load and radial load are transferred'fromthe power member 82 to the pump shaft 78 to the` combined radial andvertical thrust bearing. Such bearing is provided with a stationarybearing member 87, which is supported upon a ring member 88, which inturn is mountedupon a distributing means 89,-which, in this embodimentof the inven` It is thus seen that both vertical tion, is disclosed as aplurality of coil springs arranged circumferentially below the ring 88and engage the lower end of said ring 88 at one end and at the otherend, are supported by a cover 89 of the pulley casing 75. Said cover 89extends downwardly behind the drum of the pulley 832L so as to provide alubricant reservoir for the bearing. The stationary part 87 of thebearing is supported radially by the side1 of .such cover 89 or by aninwardly extending flange 90 thereof. Preferably, oil ducts 91 areprovided to permit the passage of lubricant from above to below the saidbearing. 92 indicates a sleeve surrounding the hollow power member 82but having a clearance therewith, which sleeve extends upwardly from thebottom of the oil reservoir so as to retain the oil within thereservoir.

The bottom of the pulley casing 75 is provided with a cylindrical wall93 extending upwardly behind the drum ofthe pulley 83a so as to providean annular lubricant reservoir surrounding the lower end of the powermember 82 of the mechanism. Close tothe shaft, a sleeve 94 is threadedto the bottom of the pulley casing 75 and extends upwardly so as toretain the oil within the reservoir. Within the reservoir is an upwardlyextending annular flange 95 which radially and horizontally supports astationary member 96 of a ball radial and thrust bearing, the rotatingmember 97 of the bearing having a radial and horizontal engagement withthe power member 82 of the mechanism, said power member 82 having anenlarged bore 98 permitting the member to extend over the oil retainingsleeve 94.

ln the operationbf this embodiment of the invention, the load from thepump shaft 78 and from the hollow power member 82 is supported upon thesame bearings, which are located at or near the opposite ends of thepower member. The' distributing means 89 of the mechanism permit such adistribution of the load of these parts of the mechanism and also permitsuch radial vthrust bearings as are shown, to be maintained under avertical load, In this manner, any clearance of such bearings originallypresent or otherwise tending to develop under load, will beautomatically taken up as in the preceding embodiment of the invention.rThis form of the invention also permits the load to be distributedbetween the separate bearings in any desired manner as the load receivedupon the upper bearing is determined by the charae ter of the springs 89employed and can be made as large or small, as desired. Also anadvantage of this form of distributing the load is that the upperbearing may always carry the same load, irrespective of whether theload. upon the pump shaft 7 8 is increased or decreased.

.iso

Figure 6 illustrates a further embodiment of certain parts of themechanism, such 4 parts generally, as will appear from the itsstationary bearing member 102 supported radially by a sleeve 103 which`may be mounted upon an upturned sleeve 104 forming part of a .motor orpump casing. The stationary member 102 engages a r1ng105 at its lowerend, which in turn is supported upon thrust distributing means 106 inform of a plurality of compression springs arranged circumferentiallyaround the power member 100 and in turn supported'by an inturnedhorizontal flange 107 integral with the sleeve 103. The power member 100also engages an upper rotating thrust member 108 of a plate type thrustbearing, such upper bearing member 108 being mounted upon a lowerbearing member or members 109, which preferably are in the form ofsegmental bearing shoes.

The modification of the parts shown" in Figure 6 is particularly suitedfor a rotary pump mechanism in which a heavy ver.

tical load must be taken up and incorporates in a rotary pump mechanism,radial bearings for the power member and pump shaft held under verticalload so asvto eliminate chatter and vtake up clearance while also takeup the load which is greater than the ball top radial and -thrustbearing may oon- 'veniently handle upon a"plate type of bears' ing, suchas shown, which is better adapted yto withstand a heavy vertical load.

From the description of the preferredembodiments of the invention, itwill be apparent that the invention may take various forms andaccordingly is not limited to any particular form or details ofconstruction of parts. Thel feature of distributing the thrust andradial load from both the power member and pump shaft of the mi/chanismto bearings disposed at or near ends of the power rmember isaccomplished in the forms of the invention ishown and will eliminatemuch of the expense involved inthe additional sets of radial andthrustbearings required with many forms of radial pumps. It is understood,however, that the invention is not limited to the elimination of suchextra set,of radial or thrust bearings as it may. be more practical inemploying this invention upon mechanisms in which an extremely heavyload is'placed, to use other bearings besides those shown. However, itwill be found that even in such cases, the amount `of bearings in it arekless and vthat Achattering of the mechanism is substantially reduced.

Vhile the embodiments of the invention herein described are well suitedfor accomplishing the purposes of this invention, it is 'not intended tolimit the invention to the specific invention shown as 'modificationsmay be made in the construction without departing from the spirit of theinvention as incorporated in the following claims.

We claim:

1. In a mechanism of the -class described, the combination of a rotarypump, a discharge casing extending vertically from the pump, motorfordriving the pump 'including a rotating member mounted on a hollow powermembes, a shaft extending from the pump to and through said member, anad`4 justing member secured to said shaft, a bearngvabove the motor, abearing below the motor connected to the power member, andidistribtingmeans engaging said adjusting member and connected to said power memberand said first mentioned vbearing so as to" distribute vertical thrustfrom said pump shaft between said bearings.

2. A rotary pump mechanism comprising in combination a rotary pump,motor for driving the pump including a rotating meml ber mounted on ahollow power member, a shaft extending from said pump to and throughsaid power member, a combined radial and vertical-1 thrust bearingsupported above the motor, avertical thrust bearing and a radialvbearing supported below Athe motor, said lower bearings bein connectedto receive' ,radial and vertical t rust from" said power member, saidupper .bearin being connected to receive radial thrust rom said powermember, and distributing means to distribute part of the load of saidpump v shaft 'to said upper bearing and a part of the load to said lowerbearings.

3. A rotary pump mechanism, comprising a rotary pump'having a verticallyextending pump shaft, driving means for the pump having its rotor membermounted on a hollow power shaft through which said Pump above land belowsaid rotor member, the lower bearing being connected to said hollowpower shaft, separate oil reservoirs for the bearings, and meansengaging said hollow power shaft and said upper bearing for distributingvertical load between said bearings. u U

4. A rotary pump mechanism comprising a rotary pump having a verticallyextending pump shaft, driving means lincludin a rotor mounted on 'ahollow power mem er,

shaft extends, bearings disposedk said pump shaft extending through saidjusting the pump shaft while maintaining power member and connectedtherewith, said rotor in set Vertical position. combinedradial andthrust bearings con- Signed at Los Angeles, California, this l0 neetedto the ends of the power member, 30th day of April, 1926.

5 means engagingsaid hollow power member and said upper bearing fordistributing load MAHLON E. LAYNE. between said bearings, and means forad- SAMUEL N. HALL.

